Is NASA tinkering with the color settings JAN 18 2004
Is NASA tinkering with the color settings on the photos from Mars?.
There are 20 reader comments
59 18 2004 2:59PM
Fascinating. Can't wait to see the first NASA-conspiracy blogs spring up...
35 18 2004 6:35PM
The link died :(
19 18 2004 7:19PM
Whole site is busted. Sure would be interested in further reading on this.
46 18 2004 7:46PM
The golf ball thing didn't make sense to me at all. But just because some of the arguments are out-there doesn't mean the color-switching thing isn't worth investigating.
00 18 2004 8:00PM
If you look at the unaltered photos with polarized lenses, you can see a discarded Zero-Point Energy module the Grays left behind when they landed in Gusev back in '71 to ditch Elvis Presley's worn-out second body.
17 18 2004 8:17PM
They altered the photos to look like a 404 page! (Sorry, I had to say it.)
06 18 2004 9:06PM
There is an identical page at this link:
http://xfacts.com/spirit2004/index.html
and similar pages:
http://mars.spherix.com/spie2003/SPIE_2003_Color_Paper.htm
http://www.enterprisemission.com/colors.htm
(sorry, I'm not sure how to make those links)
22 18 2004 9:22PM
The site has been taken down but you can still read the entire bizarre article via Google's cache of the site posted at this Metafilter thread.
http://www.metafilter.com/mefi/30805
15 18 200410:15PM
I changed the 404 link to one of the links suggested by Alaina.
10 18 200411:10PM
Does the author know that the rover doesn't even have a full colour camera? Nitwit.
04 19 200412:04AM
Sean, my thoughts exactly. I thought the page was a fairly interesting analysis, and I myself was wondering why -- and then the golfball question completely out of nowhere, no explanation, not even some crack-conspiracy-theory.
As far as the rover combining the black and white plates to create the final color print: so what? The author is arguing that the colors have been edited, but the point of this is that the colors are not accurate. At risk of sounding like a crackpot myself, NASA obviously knew the correct color calibration from the "earth shots" so any discrepancies on the Mars shots should have been color corrected back to the normal -- I would imagine this would not be extremely difficult given given the rather bright blue, green, red, and orange swatches on the sundial panel.
06 19 2004 3:06AM
I was assuming the golfball picture at the end was a joke?
55 19 2004 2:55PM
why in the world would the rover not have a colour camera?
59 19 2004 4:59PM
man, i've been looking for that golfball.
48 19 200410:48PM
Dan, the rover has wavelength filters, not a color CCD. The pictures are created using band math.
http://athena.cornell.edu/pdf/tb_pancam.pdf
It's not quite as simple as taking a picture on the beach or something.
35 20 200412:35AM
NASA Is Not Altering Mars Colors..... apparently
01 21 2004 3:01AM
For those interested in such things, Vision and Art: the Biology of Seeing is a great read. (more)
Every CCD is an array of light-sensitive diodes (actually biased to the blue wavelengths), with RGB filters on top of each. Film is much the same, with layers of emulsion sensitive to particular wavelengths, different films 'tinker' with the wavelength reception (velvia=saturation,portra=eyelike). You generally use a Macbeth color checker to calibrate.
The sundial colors are almost neon because by definition neon is a very tight wavelength of color, allowing software to triangulate for calibration.
31 21 2004 3:31PM
According to this BBC article, "Colours in the [images from Spirit] have been adjusted but scientists have not yet determined the 'true' colour of the Martian rocks."
07 21 2004 7:07PM
The normally blue starscape - or "meatball" - that forms the Nasa logo has turned a muddy red. And blue insulating foam surrounding cables on the lander has turned bright pink. - from Kevin's BBC article.
My link above explains exactly why this happens.
This thread is closed to new comments. Thanks to everyone who responded.
Sean Tevis57 18 2004 2:57PM
Why is the NASA doing this? There might be several reasons. Maybe this anomaly on Mars has something to do with it:
The color-correcting sleuthing is brilliant, but does this bit about the golf ball anomoly make sense to anyone?